Pipe wrench adapter

ABSTRACT

THIS APPLICATION DISCLOSES A DEVICE FOR MAKING A CONVENTIONAL, ADJUSTABLE, OPEN AND WRENCH INTO A PIPE WRENCH. THE INVENTION RESIDES IN THE PARTICLUAR COMBINATION AND ARRANGEMENT OF ELEMENTS AND PARTICULARY IN A FLAT PLATE LIKE ELEMENT HAVING SERRATIONS AT ONE END, AND A CURVED LIP AT THE OTHER END, WHICH DEVICE IS DESIGNED TO BE RERECEIVED IN THE SLOTTED END OF A CONVENTIONAL OPEN END WRENCH, SO THAT THE WRENCH MAY BE CONVERTED IN A PIPE WRENCH WITH THE ADDITION OF A CONVETIONAL SPROCKET CHAIN, THE INVENTION DEVICE IS ALSO PROVIDED WITH MEANS WHEREBY IT MAY BE USED WITH A RATCHET WRENCH, OR A SOCKET WRENCH AS WELL AS CONVENTIONAL OPEN END WRENCH.

Oct. 19, 1971 w. c. CHAPMAN PIPE WRENCH ADAPTER Filed Jan. 2, 1970 w/z Ll/IM c. CHAPMAN INVEN'IOR.

ATTOPA/EV "United States Patent 01 fiCe US. Cl. 81-180 2 Claims ABSTRACTOF THE DISCLOSURE This application discloses a device for making aconventional, adjustable, open end wrench into a pipe wrench. Theinvention resides in the particular combination and arrangement ofelements and particularly in a fiat plate like element having serrationsat one end, and a curved lip at the other end, which device is designedto be received in the slotted end of a conventional open end Wrench, sothat the wrench may be converted into a pipe wrench with the addition ofa conventional sprocket chain. The invention device is also providedwith means whereby it may be used with a ratchet wrench, or a socketwrench as well as a conventional open end wrench.

The invention relates to hand tools and has particular reference to adevice which may be used with a conventional open end wrench, a ratchetwrench, or a socket wrench, whereby such wrenches may readily beconverted into a pipe Wrench by adding a conventional sprocket chainthereto.

An object of the invention is to generally improve devices of thecharacter indicated and to provide a pipe wrench adapter which is simplein construction, economical to manufacture, and efficient in operation.

Another object of the invention is to provide a device of the characterindicated which may be used to transform a conventional open end wrench,a ratchet wrench, a socket wrench, or an Allen wrench into a pipewrench.

Another object of the invention is to provide a device, which whenapplied to a conventional, adjustable, open end wrench, the latter maybe used to loosen and remove the screw-on-lid from a conventional glassjar without damaging either the lid or the jar.

The foregoing objects and advantages of the invention will become moreapparent as the description proceeds, reference being made from time totime to the accompanying drawing, forming part of the within disclosure,in which drawing:

FIG. 1 is a fragmentary, plan view of a conventional, adjustable endwrench which is equipped with the invention devicewhereby to convert theadjustable end wrench into a pipe wrench.

FIG. 2 is a plan view of a similar adjustable, open end wrench which isprovided with a modified form of the invention device, whereby theassembly may be used to loosen and remove the lid of a conventionalglass jar.

FIG. 3 is a plan view of the invention device, which is provided with arectangular opening for receiving the lug of a conventional ratchetwrench, which when provided with a chain as shown in FIGS. 1 and 2, theratchet wrench serves as a pipe wrench.

FIG. 4 is a left end view of the device shown in FIG. 3.

FIG. 5 is a plan view of the device as used with ratchet wrench shown inFIGS. 3 and 4.

FIG. 6 is a plan view of the invention device which is modified toprovide a hexagonal stud to be received in the socket of a conventionalsocket wrench.

FIG. 7 is a plan view of another modified form of the invention devicewhich is provided with an opening therein for receiving an Allen wrench,whereby the Allen wrench may be used as a pipe wrench.

Patented Oct. 19, 1971 Referring now more particularly to the drawings,it will be understood that in the embodiment herein disclosed, thereference character 11 indicates, in general, a convention, adjustable,open end wrench having a fixed jaw 12 and a movable jaw 13. The movablejaw 13 has a rack like extension 14 which reciprocates in a slot 15formed in the fixed jaw 11. A rotatable screw 16 is arranged to engagethe teeth of the rack 14 to move the jaw 13 in the slot 15. The elementsjust described are the elements of a conventional, adjustable, open endwrench and constitute no part of the invention, except as they arecombined with the elements hereinafter described.

The invention device per se consists of a flat, angular, plate likemember 17 which has serrations 18 formed at one end and a curved lipportion 19 formed at the other end. The serrations 18 serve to bite intoa conventional pipe 20 and the lip 19 is adapted to be received in oneof the links 21 of a conventional sprocket chain 22, the opposite end ofwhich is pivoted, as at 23, to the device 17. The reduced end 24 of theinvention device 17 is extended between the jaws 12 and 13 and into andthrough the slot 15, so that the end 24 extends beyond the edge of thejaw 13. The wheel 16 is then rotated in the direction to close the jaws13 onto the sides of the member 17. The device is then moved toward thepipe 20 so that the serrations or teeth 18 contact the periphery of thepipe 20. The chain 22 is then extended around the pipe and the free endof the chain is made fast to the lip 19 of the device. The conventional,adjustable, open end wrench 11 then becomes a pipe wrench.

In FIG. 2 I illustrate a somewhat smaller adjustable, open end wrench 25which is provided with a modified form of the invention device 26, whichis held in the jaws of the open end wrench as previously described. Inthis embodiment, however, the lip 27 is shaped a little differently, sothat it may be removed in a link of a similar sprocket chain 28, whichin this instance encircles a conventional glass jar lid 29 which maythen be pried loose from the glass jar (not shown).

In FIGS. 3 and 4 I show a slightly different modification of theinvention device 30 which is provided with a rectangular opening 31, inwhich may be received the rectangular stud 32 of a conventional socketwrench 33. In this modification the serrations 34- and the lip end 35function as previously described when a conventional sprocket chain isadded.

In FIG. 5 I show a plan view of the invention device which is providedwith the rectangular opening 31 as previously described in connectionwith FIG. 3.

In FIG. 6 I show a further modified form of the invention device 36which is provided with a hexagonal stud 37, which is arranged to bereceived in the socket 38 of a conventional socket wrench 39. In thismodified form the serrations 40- and the lip end 41 serve as previouslydescribed when the chain 42. is afiixed and encircles a pipe 43.

In FIG. 7 I illustrate a further modified form of the invention device43' which is provided with an opening 44 which is adapted to receive theend of an Allen wrench 45, so that the Allen wrench may be used with thedevice to form a pipe wrench when a sprocket chain 46 is applied aspreviously described. In this modification the serrations 47 engage thepipe 48 as previously described.

:It is believed that the operation of the device is obvious from theforegoing description.

Having described my invention, what I claim and desire to secure byLetters Patent is:

1. An adapter for a wrench, comprising a fiat, angular, plate-likemember having serrations at one end and a curved lip at the oppositeend, said plate having pivot means near the serrated end. a chainsecured at one end to said pivot means and having the opposite endreceived on said cunved lip, said plate-like member having a reducedportion near said curved lip, which said reduced portion is received ina slot formed in a moveable jaw of an open end wrench and said curvedlip extends beyond the outside edge of said moveable jaw.

2. An adapter for a wrench, comprising a flat, angular, platelike memberhaving serrations at one end and a curved lip at the opposite end, saidplate having pivot means near the serrated end, a chain secured at oneend to said pivot means and having the opposite end received on saidcurved lip, said plate-like member having a reduced portion near saidcurved lip, which said reduced portion is received in a slot formed in amoveable jaw of an open end wrench and said curved lip extends beyondthe outside edge of said moveable jaw, said plate- 4 like member beingreceived in edgewise position between the jaws of an adjustable openwrench, and said jaws are retracted to securely grasp the edges of saidmember to secure it against displacement.

References Cited UNITED STATES PATENTS 3,314,317 4/1967 Ashley 81-68337,627 3/1886 Seymour 81-68 X 3,205,735 9/1965 Martin 8 1-68 JAMES L.JONES, 111., Primary Examiner US. Cl. X.R. 8166

